Quang was born in 1931. Quang's father was Việt and his mother was Mộng-Xuân Đặng. His paternal grandparents were Lạn and Định Nguyễn. He had two brothers and a sister, named Minh, Hải and Mộng-Khanh. He had a half-brother and a half-sister, named Lộc and Thanh-Nguyệt.